Pumping-engine.



L E. STHQTHMAN.

PUMPING ENGINE.

APPLICATION FlLED vEc.12. 1914.

Patented Apr. l?, 191?.

narran sacarse ramena LOUIS E. ySTRO'LI-IMAN, OF MILVJAUKEE, "WISCONSIN, ASSIGNOR TO ALLIS-CHALMERS MANUFACTURING COMPANY, GF MILWAUKEE, VISCONSIN, A CORPORATION OF DELAWARE.

PUMPING-ENGINE.

LZZZMiS.

Specication of Letters Patent.

Patented Apr. 117, iltlilt.

Application l'ed December 12, 1914. Serial No. 877,256.

To all 'whom t may concern:

Be it known that I, Louis E. S'rRo'rHMAN, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Improvement in Pumping Engines, of which the following is a speciication.

This invention rela-tes to improvements in the construction of pumping engines and particularly to improvements in the construction of supports for vertical pumping engines.

An object of the invention is to provide supports for the engine frames of vertical pumping engines, which are simple in construction and eiiicient in operation. One of the more specific objects of the invention is to provide one or more strut columns in addition to the usual general supporting means, for supporting the loaded portions of the engine frames directly from the main pump foundation;

lt has been customary in the construction of pumping engines having cast iron plunger barrels, to provide these barrels with projecting flan-ges or bosses at their upper or intermediate portions, and lto provide strut columns for supporting the overhead engine elements directly from these flanges or bosses. In these' prior structures the weight supported by the projecting flanges was sustained by the main pump foundation through the intermediary of the side walls of the plunger barrel. As the art progressed, cast steel plunger barrels were substituted for the cast iron barrels of the prior art. It has been found that the side Walls of these cast steel barrels, due partly to the decrease in thickness of the casting and partly to the differencev in elasticity between steel and cast iron, expand and contract considerably during the pumping operation, this expansion and contraction being known as breathing of the barrel. The breathing of the cast steel plunger barrels has made thel use of strut columns supported upon projecting flanges of the barrel side walls ob-jectionable since the movement of the supporting flanges during operation of the pump would cause the stability of the strut columns to vary. vIn order to eli1ninate this objection, the present invention contemplates the provision of strut columns for supporting the engine elements. These strut columns have their lower ends bearing directly upon portions of the plunger barrel resting upon and rigidly secured to the sole plate so as to be unaffected by the breathing. VThese strut columns provide a rigid support for the overhead engine elements directly from the main pump foundation. The main pump foundation comprises the sole plate and sub-structure as well as integral super-structure rigidly secured thereto.

A clear conception of an embodiment of the invention may be had by referring to the drawing accompanying and forming a part of this specification in which like reference characters designate the same or similar parts in the various views.

Figure l is a fragmentary end view of a vertical pumping engine.

Fig. 2 is a fragmentary, part sectional front viewof a vertical pumping engine.

The'pumping engine, one unit of which is disclosed in the drawing, comprises essentially a plunger barrel l, suction and delivery chambers 5, 6, a reciprocable plunger S, and a vertical steam engine or other means for reciprocating the plunger S. The plunger barrel l, suction and delivery chambers 5, 6, and the plunger 8, in a vertical pumping engine such as shown, are generally located within `the pump pit and below the engine room floor. The plunger ban rel 1, which in the present instance is preferably formed of cast steel or other metal having similar properties, is provided at its lower end with integral feet ll which rest upon the sole plate 3. The barrel l is supported directly from the sole plate 3 which rests upon and forms a. part of the main pump foundation. The suction and delivery chambers 5, 6,'communicate directly with the plunger barrel 1 through the usual valves, these chambers also resting directly upon the sole plate 3.

The pump plunger 8 is reciprocable within the plunger barrel by means of a suitable actuating device which in the present instance is disclosed as a steam engine lo-A cated vertically above the pump. The main bed-plate 4 of the steam engine is supported at remote portions thereof directly from the upper extremities of the air chambers which form portions of the suction and delivery chambers 5, 6. Between the remotely supported portions of the bed-plate 4, this bed-plate is provided with one or more bearings for the main shaft 9 of the engine. The main shaft 9 is rotatable Within the bearings in the bed-plate 4 by means of the engine 13 acting through the piston rod 16, cross-head 17, connecting rod 15 and crank 10. The engine 18 and the elements coperating therewith are supported from the bed-plate 4 through the main engine frames 11.

In order to positively prevent possible deflection or straining of the bed-plate 4 at the bearing of the shaft 9, the strut column 2 is provided. This column coacts With a lower surface of the bed-plate 4, and with the upper surface of the foot 14 of the barrel 1. In the present disclosure several strut columns are shown, one being located on each side of the plunger barrel 1. The strut columns 2 are provided With flanges 12 at portions intermediate their ends, Which flanges serve as supports for the pit gallery 7.

It will be noted that during normal operation of the engine, the bearings for the shaft 9 Within the bed-plate 4 are subjected to variable relatively high pressures which, Without the provision of proper supports for the bed-plate 4, Would tend to throw the shaft 9 out of line. By providing the strut columns 2, such objectionable result is avoided and the bed-plate 4 is firmly supported to prevent any possible deflection or straining thereof at the shaft bearing. rlhe provision of a support for the columns 2 upon the feet 14 Which rest directly upon the sole plate 3, also provides a rigid support for the bed-plate 4, which is unaffected by the breathing of the plunger barrel 1 during normal operation of the pump. The fact that the columns 2 rest upon the feet 14, which are formed integral with the barrel 1 instead of coacting directly with the sole plate 3, also provides an additional securing eEect for tying the plunger barrel 1 to the sole plate, since the Weight of the strut columns 2 and the elements supported thereby, is utilized in holding the barrel 1 in position. The columns 2 also form suitable stationary supports for the gallery 7, which gallery, if supported directly from the barrel 1, would be subjected to the undesirable movement induced by the breathing of the plunger barrel. Vhile the invention is disclosed as applied to only one unit of a vertical compound pumping engine, it will be apparent that further application of the same to other units of such engines would be Within the scope of the present invention.

It should be understood that itV is not desired to be limited to the exact details of construction shown and described, for obvious modifications Will occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,-

1. In an engine, the combination of a main foundation, an overhead vertical engine having a bed-plate, an engine shaft supported by said bed-plate, a support for said engine applied underneath Said bedplate at both sides of and remote from said shaft, and other supporting means for said engine applied underneath said bed-plate and located on opposite sides of said engine and in the vertical plane passing through the axis of said shaft said other supporting means extending directly from said bedplate to said foundation.

2. In an engine, the combination of a main foundation, an overhead vertical engine having a bed-plate, an engine shaft supported by said bed-plate, a support for said engine applied underneath said bedplate at both sides of and remote from said shaft, a bearing for said shaft located at one side of said engine, and another supporting means for said engine applied underneath said bed-plate directly underneath said bearing said other supporting means extending directly from said bed-plate toV said foundation.

3. In a pumping engine, a main pump foundation, a breathing plunger barrel having a projection unalfected by the breathing said projection resting on said foundation, an engine, means on said foundation for supporting a part of the Weight of said engine, and a strut column resting on said projection and supporting the remainder of the weight of said engine.

4. In a pumping engine, a main pump foundation, a breathing plunger barrel having a projection unaffected by the breathing said projection resting on said foundation, an engine, pump elements on said foundation for supporting a part of the Weight of said engine, a strut column resting on said projection and supporting the remainder of the weight of said engine, and a gallery, said strut column serving as a support for said gallery.

5. In a pumping engine having a breathing pump barrel, the combination of a main foundation, an overhead vertical engine having a bed-plate, an engine shaft supported by said bed-plate, a pumping element serving as a support for said engine applied underneath said bed-plate at both sides of said shaft, a bearing for said shaft located at one side of said engine, and another sup- 'porting means for said engine applied aixed hereto in the presence of two Witunderneatclll Said bed-plate (lllirectly undernesses. neath sai eating said ot er supporting means extending directly .from said bed- L' E' STROTHMAN 5 plate to said foundation and unaected by 1x/Vitnesses:

the breathing of said pump barrel. W. H. LIEBER, In testimony whereof, my signature is Ro. E. STOLL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

